Draft Environmental Impact Report - California Off Highway Vehicle ...

3.2 Air Quality
road base in the maintenance yard and in the staging areas, hauling and laying substrate
amendment on the tracks, and hauling and arranging large rocks within the 4x4 area.
Criteria Pollutant Emissions
Construction emissions of criteria pollutants would principally consist of exhaust emissions (NOx,
oxides of sulfur, CO, ROG, PM10, and PM2.5) from heavy‐duty construction equipment, delivery
trucks, and worker commutes. Construction equipment emissions would be largely localized,
while delivery truck and worker commute trips would generate emissions over a broader area.
Fugitive dust would be generated by grading operations, the movement of construction equipment
and vehicular traffic in unpaved areas of the SVRA, and the movement of haul trucks along paved
roads to and from the SVRA. Additionally, paving operations and applications of architectural
coatings would release ROG emissions. Emissions from construction activities can vary
substantially from day to day, depending on the level of activity, the specific type of operation, and
prevailing weather conditions.
Consistent with the General Plan’s Operations and Management (OM) Guideline 6.3, construction
activities would comply with Butte County AQMD Rule 205, “Fugitive Dust Emissions,” to control
PM10 fugitive dust emissions from construction activities and from soil stockpile areas.
Accordingly, the following rules have been incorporated into the URBEMIS2007 model to be
consistent with Rule 205:
Maintain speed on unpaved roads at less than 15 mph.
Water exposed surfaces at least twice daily.
Apply soil stabilizers to inactive areas.
Stabilize soil in equipment loading/unloading areas.
Replace groundcover in disturbed areas quickly.
Manage haul road dust by watering at least twice daily.
Consistent with OM Guideline 6.2, the following measures designed to reduce construction
emissions would be required during construction.
OM Guideline 6.2: Require that contractors and/or staff implement the following actions
to minimize ozone precursor (ROG and NOX) emissions during construction activities:
Post clearly visible signs that no equipment shall be left idling for longer than
5 minutes.
Maintain all construction equipment according to manufacturer’s specifications.
Use diesel construction equipment meeting the California Air Resources Board’s 1996
or newer certification standard for off‐road heavy‐duty diesel engines.
Clay Pit State Vehicular Recreation Area
February 2012 3.2-10 Draft EIR